Using Serviceguard Extension for RAC, 7th Edition, September 2008

NOTE: Do not configure CLUSTER_INTERCONNECT_SUBNET in the RAC instance package if
the RAC-IC network is the same as CSS-HB network.
The following is an example of the relevant package configuration parameters:
Oracle RAC Instance Package
PACKAGE_NAME RAC_PACKAGE
PACKAGE_TYPE MULTI_NODE
LOCAL_LAN_FAILOVER_ALLOWED YES
NODE_FAIL_FAST_ENABLED NO
CLUSTER_INTERCONNECT_SUBNET 192.168.2.0
NOTE: For information on guidelines to change certain Oracle Clusterware and Serviceguard
cluster configuration parameters, see “Guidelines for Changing Cluster Parameters” (page 41)
Faster Failover Configuration (SGeFF and SGeRAC)
Faster Failover configurations with SGeFF require at least two separate SG-HB networks, and
are restricted to two nodes.
Figure 2-4 Faster Failover Configuration
As shown in Figure 2-4, the Faster Failover configuration uses two SG-HBs on two primary
networks with no standby, which enables the quickest determination of node failure and faster
failover.
• First network with primary for SG-HB #1 (lan1).
• Second network with primary for SG-HB #2 (lan2).
• Third network with primary and standby for CSS-HB and RAC-IC (lan3/lan4).
• Single failure is protected by primary/standby.
If the subnet with CSS-HB fails, unless subnet monitoring is used, CSS will resolve the interconnect
subnet failure with a CSS cluster reconfiguration. CSS will wait for CSS misscount time interval
(Oracle Clusterware configuration parameter) before handling the CSS-HB subnet failure. The
default value of CSS misscount in SGeRAC configurations is 600 seconds.
40 Serviceguard Configuration for Oracle 10g RAC